USA TODAY Sudoku Super Challenge 3

From the original publisher of daily Sudokus in the United States,USA TODAYpresents 200 all-new Sudoku puzzle challenges in five difficulty levels. USA TODAY Sudoku Super Challenge 3is a collection featuring 200 Sudoku puzzles in five difficulty levels fromUSA TODAY--the nation's newspaper. Features include: Introductory how-to section200 9 x 9 Sudoku puzzlesComprehensive answer key